基于Delta算子的数字滤波器设计  

Design of digital filter based on Delta operator

作　　者：庄陵[1] 唐贤伦[1] 

机构地区：[1]重庆邮电大学,重庆400065

出　　处：《重庆邮电大学学报（自然科学版）》2008年第4期407-409,446,共4页Journal of Chongqing University of Posts and Telecommunications(Natural Science Edition)

基　　金：国家自然科学基金资助项目(项目编号60506055)

摘　　要：针对高速采样的离散系统能避免传统数字信号处理中的系数表达精度不够及高采样率情况下的数值不稳定,从频谱逼近角度出发引入Delta算子理论并利用连续系统设计方法来设计数字滤波器,该方法适用于不同类型的滤波器设计。在理论分析的基础上对该设计方法进行了阐述和举例,仿真结果验证了该设计方法的有效性。A novel design method for digital filter was presented using the idea of spectrum approximating. With the introduction of Delta operator theory, the high-speed sampling system was processed like continuous one, which could reduce the error of coefficient precision and improve the performance of digital filter. It is also applicable to different filter type. After theoretical analysis, the method was fully expatiated on, and simulation result validates the method＇s effectiveness.

关 键 词：Delta(占)算子 数字滤波器 高速采样 

分 类 号：TN911.72[电子电信—通信与信息系统]